An interesting alternative:

If you're looking to get custom music done for your project at a reasonable price, Audiodraft is well-worth checking out:

You can set up a competition with a project brief, and users of the site then pitch their entries. And for the price of what you'd normaly pay for a single custom track, you could easily get hundreds of entries specifically tailored to your project. At the end of the competition, you pick a winner who then receives the price you've set. It takes a little more effort, but it could be well worth it. Has many different price levels, depending on your requirements (lengths, exclusivity etc).